package com.elasticsearch.jd_study.service;

import com.alibaba.fastjson.JSON;
import com.elasticsearch.jd_study.pojo.Content;
import com.elasticsearch.jd_study.spider.HtmlParseUtil;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.TermQueryBuilder;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;


//业务编写
@Service
public class ContentService {

    @Autowired
    private RestHighLevelClient restHighLevelClient;

    //1.解析数据放入es索引
    public Boolean parseContent(String keywords) throws Exception{
        ArrayList<Content> contents = new HtmlParseUtil().parseJD(keywords);
        //把查询的数据放入es
        BulkRequest bulkRequest = new BulkRequest();
        bulkRequest.timeout("60s");
        //批量插入
        for (int i = 0; i < contents.size(); i++) {
            bulkRequest.add(new IndexRequest("jd_goods").source(JSON.toJSONString(contents.get(i)), XContentType.JSON));
        }
        BulkResponse bulk = restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);

        return !bulk.hasFailures();

    }



    //2.获取数据搜索功能
    public List<Map<String,Object>> searchPage(String keyword,int pageNo,int pageSize) throws IOException {
        if (pageNo <=1){
            pageNo = 1;
        }

        //条件搜索
        SearchRequest searchRequest = new SearchRequest("jd_goods");
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

        //分页功能
        searchSourceBuilder.from(pageNo);
        searchSourceBuilder.size(pageSize);


        //精准匹配
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", keyword);
        searchSourceBuilder.query(termQueryBuilder);
        searchSourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));

        //执行搜索
        searchRequest.source(searchSourceBuilder);
        SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);

        //解析结果
        ArrayList<Map<String,Object>> list = new ArrayList<>();
        for (SearchHit documentFields : search.getHits()) {
            list.add(documentFields.getSourceAsMap());
        }
        return list;


    }
}
